>> guest: campaigns like the obama campaign is smart like that. they do send people out to do the i.t.. in a statistical model in 2008, the obama campaign was basically modeling the electorate in the swing states every week which was to say that they would put out tens of thousands of pay phone calls and all the volunteers doing the talking to the voters and that is all of the data their body for the commercial lenders feeding into these algorithms and every week they come up with a new projection of how each individual would vote and whether they would vote and allowed by the canvassers to talk to people about particular issues, and so, there is less of a need to do all of your identification work individually. it helps to have the volunteer activities. but then one of the shift in the obama campaign this year that they are going to be using the canvas for more for persuasion and not just for the ayittey in his berkeley the campaigns usually thought of it as i used my volunteer to do this sort of a grunt work of going out and asking people who th